Home / 280,212.60-420,442.22-147,060.75

Finding the Fourth Proportional to 280,212.60, 420,442.22 and 147,060.75

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Solution

The fourth proportional to 280,212.60, 420,442.22 and 147,060.75 is: 220,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,212.60 : 420,442.22 = 147,060.75 : x
  2. Step 2: Convert to fraction form
    280,212.60/420,442.22 = 147,060.75/x
  3. Step 3: Cross multiply
    280,212.60x = 420,442.22 × 147,060.75
  4. Step 4: Simplify right side
    280,212.60x = 61,830,548,204.87
  5. Step 5: Solve for x
    x = 61,830,548,204.87/280,212.60
  6. Step 6: Final answer
    x = 220,655.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.